Binding post



May 26., 1931;

W. E. HOLLAND BINDING POST Filed July s. 1929 Patented May 26, ,74193-1 UNITED ySTATES PATENT .ol-Flgclsi 'WALTER HOLLAND, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOB T0 PHILADEL- PHIA STORAGE BATTERY COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, A COB- :eoRATIoN or PENNSYLVANIA BINDING POST l Application mea July a, 1929. -serial No. 375,849.

This invention relates'to improvements in binding posts and similar devices for the retention of electrical conductors, and the principal object of the invention is to provide a simple and inexpensive spring-type binding post consisting of a minimum number of parts and having as characteristic features thereof ease of .assembly and installation.

Another object-of the invention is to provide a binding post so constructed that the operation of attaching an electrical conductor thereto is an extremely simple and vrelatively easy one, and in which the conductor is securely held until such time as it may be desirable to break the connection.

In the attached drawings:

Figure 1 is a view in vperspective of a binding post made in accordance with my inven' tion;

Fig.. 2 is an -enlarged vertical section through the binding post and the base to which the post is secured.and

Figs. 3 and 4 are fragmentary perspective views illustrating modifications within the scope of the invention. A

With reference to the drawings, 1 is a column of conducting material having a reduced base portion 2. 3 is a collar which receives the said base portion 2 and is adapted for mounting in a supporting structure or member which in the present instance is constitutedby a plate 4 of insulating material. In the present instance, the collar 3 has a reduced. lower extension fitting within an aperture in the plate 4 and a flange 5 which rests upon the top of the plate and affords a. sub stantial bearing between these parts. The reduced part 2 of the column 1 projects beyond the lower end 'of ythe collar, andafter' receiving washers 6 and 7 and between these a soldering lug 8 is riveted over to secure the column ,in place, the support 4 being securely clamped between the flange 5 and the washer 6. i

The column 1 has at the top a'transversely enlarged part-or head 9 and below the head a transverse pas'ssage 10 which in size is somewhat larger than the largest diameter of conductor which the binding post is adapted to hold. -Slidably mounted upon `the column 1 is a sleeve 11 preferably of insulating material, such as Bakelite, which is of sulicient width at.the bottom to easily embrace the collar 3 and which is turned inwardly at the top to more or less closely embrace the upper portion of the column 1, the sleeve 1'1 thus being free to move longitudinally of the co1- umn but being confined by the head 9. Surrounding the .column l in the interior of the sleeve 11 is a spring 12 which rests at the bottom upon the top' of the collar 3 and bears at the top against the turned-in portion of the sleeve 11. This spring normally holds the sleeve 11 against the under side of the head 9, but permits the sleeve to be moved downwardly for insertion of a conductor 13 through the passage 10, as illustrated. Thereafter, release of the sleeve 11 permits the spring to force the sleeve up against the conductor to thereby clamp and hold the latter in position. It will he noted that there is a shearing actionbetween the upper end yedges of'the passage 10 and the upper edges of the opening of the sleeve 11 through which the column 1 extends whereby a firm grip is established upon the conductor preventing accidental displacement of the latter and at the same time forcing the conductor into good electrical contact with the conducting column- 1. It will be noted also that the spring is completely housed within the sleeve 11 and is not exposed. v Y

In Fig. 3, the v passage provided in the column 1 for reception of the conductor 13 extends from the side of the column at a point below the head 9 upwardly on a slant to the top endsurface of the column, this passage in Fig. V3 being designated by the reference numeral 10a. This provides that one end vof the conductor-receiving passage shall be accessible at the ,top of the column, which some.

lportion and at its upper end a passage adapted for reception of a wire conductor, at least oneend of said passage terminating inthe side of the column, means for moun the column in a supporting structure including a 5 collar closing embracing the reduced lower Y portion of the column and adapted at its low er end to engage the said supporting struc- A ture, the lower end of said column projecting below the collar and thesupporting structure and adapted to be expanded to thereby secure the column in the structure, a spring surrounding the upper end of the column and seated upon the top of said collar, and a sleeve also surrounding the colmn and having a part at the top closely embracing the column and forming an abutment for the upper end ofthe spring whereby the spring is adapted to resiliently retain the sleeve against a wire conductor inserted in said passage to clamp the conductor in the column.

2. A. binding post comprising a column of conducting material having a lower reduced portion and at its upper end a passage adapted for rece tion of a wire conductor, at least 425 one end ofpsaid passage terminating in the side of the `column, means for mounting the column in a supportingstructure including av collar closely embracing the reduced lower portionof the column and' adapted at its low- Y er end to engage the said supporting structure, the lower end of said column projecting Y below the collar and the supporting structure, A means at the lower end of said column for securing the latter in the structure, a spring surrounding the upper end of the column and seated upon the top of'said collar, and a sleeve also surrounding the column and having a part at the top closely embracing the column and forming an abutment for the upper end 40 of the spring wherebiyl1 the spring is adapted to resilient-ly retain t efsleeve against a wire conductor inserted in said passage .to clamp the conductor in the column. Y

WALTER E. HOLLAND. V 

